/*
 * Copyright (c) 2011, Julien Lamy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * Neither the name of the project's author nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef edcdcf07_1812_47f2_ac27_5836f5063d9c
#define edcdcf07_1812_47f2_ac27_5836f5063d9c

#include "config.h"
#include "dataobject.h"
#include "track.h"

namespace filter
{

class BABELPOD_EXPORT Base
{
public :
    virtual bool operator()(Track const & track) const =0;
};

template<typename T>
class Filter : public Base
{
public :
    DataObjectType::Type attribute;
    T value;

    Filter(DataObjectType::Type attribute, T const & value)
    : attribute(attribute), value(value)
    {
        // Nothing else
    }

    bool operator()(Track const & track) const
    {
        return (track[attribute] == value);
    }
};

class BABELPOD_EXPORT Not : public Base
{
public :
    Not(Base const & filter);
    virtual bool operator()(Track const & track) const;

private :
    Base const & f_;
};

class BABELPOD_EXPORT And : public Base
{
public :
    And(Base const & f1, Base const & f2);
    bool operator()(Track const & track) const;

private :
    Base const & f1_;
    Base const & f2_;
};

class BABELPOD_EXPORT Or : public Base
{
public :
    Or(Base const & f1, Base const & f2);
    bool operator()(Track const & track) const;

private :
    Base const & f1_;
    Base const & f2_;
};

}

#endif // edcdcf07_1812_47f2_ac27_5836f5063d9c
